diff options
| author | Andrew Boie <andrew.p.boie@intel.com> | 2016-07-26 14:55:41 -0700 |
|---|---|---|
| committer | Andrew Boie <andrew.p.boie@intel.com> | 2016-07-28 18:13:24 +0000 |
| commit | 17c0b372a2f8a8e9cc5967a49e37b43419dccb48 (patch) | |
| tree | e9f453eda03ba17de13171eea29d1f5b1564424b /misc | |
| parent | d67745796edd03131eb587bd7c64bbb692f2d8a5 (diff) | |
x86: improve exception APIs
Previously, exception stubs had to be declared in assembly
language files. Now we have two new APIs to regsiter exception
handlers at C toplevel:
_EXCEPTION_CONNECT_CODE(handler, vector)
_EXCEPTION_CONNECT_NOCODE(handler, vector)
For x86 exceptions that do and do not push error codes onto
the stack respectively.
In addition, it's now no longer necessary to #define around
exception registration. We now use .gnu.linkonce magic such that
the first _EXCEPTION_CONNECT_*() that the linker finds is used
for the specified vector. Applications are free to install their
own exception handlers which will take precedence over default
handlers such as installed by arch/x86/core/fatal.c
Some Makefiles have been adjusted so that the default exception
handlers in arch/x86/core/fatal.c are linked last. The code has
been tested that the right order of precedence is taken for
exceptions overridden in the floating point, gdb debug, or
application code. The asm SYS_NANO_CPU_EXC_CONNECT API has been
removed; it was ill- conceived as it only worked for exceptions
that didn't push error codes. All the asm NANO_CPU_EXC_CONNECT_*
APIs are gone as well in favor of the new _EXCEPTION_CONNNECT_*()
APIs.
CONFIG_EXCEPTION_DEBUG no longer needs to be disabled for test
cases that define their own exception handlers.
Issue: ZEP-203
Change-Id: I782e0143fba832d18cdf4daaa7e47820595fe041
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
Diffstat (limited to 'misc')
| -rw-r--r-- | misc/debug/Kconfig | 12 |
1 files changed, 0 insertions, 12 deletions
diff --git a/misc/debug/Kconfig b/misc/debug/Kconfig index 338f9df47..675a5b117 100644 --- a/misc/debug/Kconfig +++ b/misc/debug/Kconfig @@ -67,17 +67,6 @@ endmenu # # Generic Debugging Options # - -config DEBUGGER_OWNS_FATAL_PROG_EXC_HANDLERS - bool "Debugger provides handlers for some fatal programmer exceptions" - default n - depends on X86 && !X86_IAMCU - help - Give control to a target debugger such as GDB over the divide-by-zero - and page fault exceptions. - - NOTE: Does not currently work with the x86 IAMCU ABI. - config DEBUG_INFO bool "Enable system debugging information" default n @@ -101,7 +90,6 @@ config GDB_SERVER select MEM_SAFE select DEBUG_INFO select UART_CONSOLE_DEBUG_SERVER_HOOKS - select DEBUGGER_OWNS_FATAL_PROG_EXC_HANDLERS if !GDB_SERVER_BOOTLOADER help This option enables the GDB Server support. |